Protesters toss scooters into street to block tech buses...

Protesters in the Mission District blocked tech buses from leaving San Francisco on Thursday morning, tossing scooters into the street to waylay the commuters.

Photo: Sarah Ravani / The Chronicle

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Protesters in the Mission District blocked tech buses from leaving San Francisco on Thursday morning, tossing scooters into the street to waylay the commuters.

Photo: Sarah Ravani / The Chronicle

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Click through the gallery to see some of the worst offenders and hilarious parking jobs of scooters in San Francisco, as identified by social-media users.

Photo: @YaBoyJayBee415/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @JeffEugley

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @YaBoyJayBee415/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @abbybourgon/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @DBBradway/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @sbjinsfo

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: Eddie Hernandez Photography/Instagram

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @TedrickG/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: WalkSF/Instagram

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @grahamhancock/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @SRobertsKRON4

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @lawrencebowlus

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @kartikhelps/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: John A Davis/Facebook

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From San Francisco Supervisor Katy Tang.

Photo: @supervisortang

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A response to Supervisor Tang's scooter photo.

Photo: @jreesnc/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @tim_narwhal

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @TedrickG/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: codymhicks/Instagram

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @geoffreyfowler/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: montmark1971/Instagram

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @nicgoob/Twitter

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Some are pointing out that San Francisco's cars aren't always parked right, either.

Photo: abarton333/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: Littlebeebaking/Instagram

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @itsfredoalvarez/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @shirillasaurus/Twitter

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People in San Francisco share photos of badly parked or trashed scooters.

Photo: @nataliehb/Twitter

Protesters in the Mission District blocked tech buses for nearly an hour Thursday morning in San Francisco, tossing scooters into the street to waylay the commuters.

The activists, blocking buses at the intersection of 24th and Valencia streets, set off smoke bombs, chanted “we are unstoppable, another world is possible,” and carried signs that read “Techsploitation Is Toxic,” and “Sweep Tech Not Tents,” in reference to the city’s recent efforts to clear homeless encampments.

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Electric scooters by companies like Lime, Spin and Bird have taken over San Francisco streets and sidewalks. They're controversial — and we tested one out for a quick ride.

Video: Alix Martichoux / SFGATE

Sam Lew, 23, said she grew up in the Richmond District and has experienced firsthand how the influx of tech workers has gentrified her neighborhood and displaced residents across San Francisco.

“The city has been very aggressively sweeping people out who are living in tents and sitting on the streets. It’s very very clear that we are prioritizing technology over human beings,” she said, referring to the scooters frequently abandoned to block sidewalks on city streets.

State Senator Scott Wiener discussed the protest on social media and said activists and tech employees need to work together.

“We have real problems in San Francisco. We will solve them *only* if we work together,” Wiener tweeted. “Trashing scooters, blocking commuter shuttles so people can’t get to work, & demonizing people because of where they work isn’t how you make positive change.”

Sarah Ravani covers crime and breaking news at The San Francisco Chronicle. She graduated from Columbia University's Graduate School of Journalism in May 2016 where she produced work in audio, photo and digital storytelling. Her coverage included stories on police, race/identity, the LGBT community and human rights.